Song Surgeon for MAC will run on Version 10.4 and newer.  It also runs on both PPC and Intel based processors.

Version 2 can be run on almost any machine with the correct OS. However, Version 3 uses a much more CPU and
memory intensive processing and older machines, may not be able to effectively run the program. 

We suggest you download the demo version and try it to ascertain whether it will run efficiently on your machine
if you have an older computer.